What is the solubility of $PbI_2$ ?

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Answer 1 · 2016-10-10T15:39:33

You need a $K_"sp"$ value for $PbI_2$ .

Plumbous iodide is insoluble in aqueous solution, and thus the reaction would lead to a yellow precipitate of $PbI_2$ as shown.

$Pb(NO_3)_2(aq) + 2KI(aq) rarr PbI_2(s)darr + 2KNO_3(aq)$ .

Now of course we could calculate the concentration of $PbI_2$ that does go up into solution, but for this need a $K_"sp"$ value for $PbI_2$ .

$PbI_2(s) rightleftharpoons Pb^(2+) + 2I^-$

$K_"sp"=[Pb^(2+)][I^-]^2$ $=$ $??$

What is the solubility of PbI_2PbI_2?